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<br />INTRODUCTION 5 <br /> <br /> <br />" . :t. ,. ~ , <br /> <br />""'''/~'i <br />V'-"O~Ji. <br /> <br />Table 1. List of data bases searched <br /> <br />Name of data base Time coverage Description <br />Aquatic Sciences and 1978 to 1991 Comprehensive data base on the sci- <br />Fisheries Abstracts ence, technology, and management of <br /> marine and freshwater environments. <br />Biosis Previews 1969 to 1991 Comprehensive worldwide coverage <br /> of research in the biological and bio- <br /> medical sciences. <br />Conference Paper Index 1973 to 1991 Centralized source of information on <br /> reports of research and development <br /> from papers presented at conferences <br /> and meetings. <br />Dissertation Abstracts 1861 to 1991 Indexing data base of all American <br />Online dissertations accepted at accredited <br /> institutions. <br />Enviroline 1971 to 1991 Indexing and abstracting data base <br /> covering all aspects of the environ- <br /> ment. <br />Environmental Bibliog- 1973 to 1991 Bibliographic data base of periodicals <br />raphy covering the fields of ecology, atmo- <br /> spheric studies, energy, land <br /> resources, water resources, nutrition, <br /> and health. <br />GEOREF 1785 to 1991 Earth-science data base produced by <br /> American Geological Institute, Alex- <br /> andria, Va. <br />NTIS 1964 to 1991 National Technical Information Ser- <br /> vice data base of government-spon- <br /> sored research reports. <br />Pollution Abstracts 1970 to 1991 Indexing source of environmental- <br /> related literature on pollution, its <br /> sources, and its control. <br />Water Resources 1968 to 1991 Online version of Water Resources <br />Abstracts Abstracts. <br />Zoological Record 1978 to 1991 Online version that provides world- <br />Online wide coverage of zoological literature. <br />